Collapsible core for plastic building-walls.



PATENTED JAN. l, 1907.

ZIJ/2% i 'l W. E. DE LHORBB. CGLLAPSIBLB UORE FOR LPLASTIG BUlLDNG WALLS.

` PPLIGATION IILED MAY 17, 1906.

./.f QW

Noi 839,818.

TLLAM E. DE LEGRBE,

LLPHBLE ne. essere.

Application ilsd Mey 17,1906X Scritti No` 317,334.

Specification of Letters Patent.

OF ClilCAGO, ILLINOS.

Patented Jan.l 1, 196'?. l

To all whom it may concern:

Be it lmown that l, WILLIAM E. DE Leones, s' citizen oi the United States, residing et Ch, ngo, in the county olz Cool; sind State oi illinois, have invented e. certain new and useful improvement in Collapsible Cores for Plastic Biiilding-Nells, of whieii the foilowing' is s speoiiiozttion.

ilfy invention relates to eollensil'iie sores for 'producing einspz in huil-din@l 'slls formed'ol oeinent or other piestio i* :iter el.

The object or" the invention is to provide ineens whereby en nir specs or diret muy he formed within the will Without lateral spertures running te the surface of the woll, and also to produce suoli duets or spsoes sentirmousiy the will rises in process ot consti-uotion. Eiieiiy speaking, this object ob tained hy mes-ns of oollspsilile tuhe provided with ineens whereby it may he eollzipsedefter the Well hss more or l oonipletely set or hardened around it.

i attain niy object by the slippers. tus shown inthe eeeoinpsnying drawings, in which- Figure i is horizontal section of o huilding-.vall 1 showing' @retos-ees.. lli-two of these spaces my collapsible core is shown in posi.- tion. liig. 2 is e side elevation of the core. 3 seetioi'iel elevation taken 'longitir dinslly through the greet st dimension thereof end showing the eollspsingl and i-ripzinding ineens. isili. 'lhe view shows the oore in expended position. ilio- -fl is similar to Fig. 32 but shows the tube i collapsed or oonn trsoted position. Fir. 5 is e horizontal, sootional view teken on line 5 5 ot his', (lr-sivo to 'on increased seele ALind showing.;r :i seotion oi building-well with the eore in pleno therein find in ooilopsed condition.

Similar letters refer to simile-lr thronehont 'the several views.

. tell e or sore proper oon:` e, preisrzihly, oii sheet inetiii oi suoli silo'iiess :is to withstand thel rail pressure o?? the plastic materiel oi which the will t is to he composed, seid Gore heineT snilioientyV [le he collapsible under the sation oin proper nieehenisin when the oore islo he withdrawn. The precise erossseotiorml Configuration oi the sore is not essentiel, but in the preferred forni the sides approxiinzitelj l paralisi end the ends round, it heilig.r iiihvious, however, to those skilled in the :il-t that in orosssee-tion the eor-` .iight he circuler or' ellipe tieel or inodiiied from either of these forms. The core is not s complete tube, howeverthat is, is not eontinuous in its periphery, 1out .is split along the-side, and the edges a and a2 oi" the oore iep a. slight distance. The height of the oore is not essentiel, and this di niension 'may he altered to suit the convenience of diilerent users.

The preferred mechanism for holding the core in collapsed or expended position is best illustrated in Figs. 3 end 4, in which c representis s controlling-rod, which is oonneeted to one overlapping edge o by ineens of links fl,-Whioh links are pivoted et d to said rod end at d2 to the ooredep a2. Said rod is vertically slidehle in the guide-straps e, rigidly secured to the inside of the Core et the remaining' overlapping edge a? thereof. Said guide-straps a prevent lateral movement of seid rod with reference to the core, and in order to stifleii seid guidestrsps the free ex'- treinities thereof ere passed beneath keepers f, rigidly secured. on the opposite lep a?.

.The'pa-rts are so arranged that the rod c is vertically movable within the gnide-straps e, sind said guide-stra s at their free extremities fire `hoi'iizontslly s id able Within the keepers j". lt is desirable to provide an eye c et the 'doper extremity oirod c for manipulating it by hand or tackle.

in the operation of the apparatus the core iirst set in upright position with the oontroiiiniV parte in the condition shown in Fig. 3, in which the linksd are spproxiinately et right angles to the ovorlepping edges a/ a2. Under these @ont ions the eore expended to its greatest size. Y The Cement or other nlsstio materiel or which the 'Wa-ll is to he huilt is then built up eroiindthe eore in the A usuel manner, the ores, occupied by the core forming deedeir spese in the Wall, :is indiosied in Fi i. end The ooie tends to ins-intein itself in expended position notwithstanding the letersl pressure of the building rumori-fil, i'or the reoson that the links d ooou'loy e position which might be referred to as Hdeed-oenter--thst is tosay, the f lie in s. direction coincident with the lines o 'pressure oi the building material upon the core. Alfter the well has risen to s height niore or less closely approaching the upper end of the core, elloi1 'ing suilioient time to elapse for the ma.- teriiil to more or less Completely Set or harden, a. bloc-k and. tackle, derriek, or other suitable elevating mechanism, or in the case of sinell cores the hand of the operator, is spplied to the rod c -for example, et the eye c therein-end caused to reise seid rod. The

IOO

raising of the rod while the core stillA remains in place causes the links d to rotate about their pivots d2 on the edge el, thus drawing said edges a and. a2 together to increase the overlap thereof. This contracts the core, and consequently loosens it not only from the ends, but draws the exterior surface thereof away from the interior surface of the space Within the wall. Thus the core becomes loosened, and by the continuously-upward pulling movement on the rod c the core may be lifted out. inasmuch as the operatingparts are all inside of the tube, there is nothing i e become embedded in the cement of the wall and nothing to interfere with the free withdrawal of the core from the wall. Although the outer overlapping edge o2 may engage a slight ridge or shoulder formed'by its presence within the wall, the inner edge c is free to telescope within said outer edge,

and it is therefore unnecessary for both edgesto be movable within the wall.

As a result of the above construction it is clear that under ordinary conditions` no matter how hard the wall becomes it is' merely necessary to pull upward upon the controlling-rod c, when the core will be loosened from the wall and pulled up out of the same with practically a single continuous movement of said controlling-rod.

It isv obvious, of course, that in constructing the Wall it is not necessary to completely withdraw the core, for its lower extremity may be lft within the wall and the wall continued up around it, thus rendering it possible with a short core to form a continuous airis the pressure of the surrounding material saasie upon the sides of the core all that is necessary is to l'orce the controlling-rod c down until the links d are horizontal-that is, in line with the direction of each lateral pressure. No locks or clips or removable pieces are necessary, and the whole apparatus constitutes a single cooperative mechanism. y

What l claim as new, and desire to secure by Letters JPatent, is-

l. A sheet-metal core lor building-walls having its longitudinal edges overlapping,v

links pivoted to the inside of said core near one edge, and a member longitudinally slidable but laterally lixed with reference to the opposite edge ol said core and pivoted to the remaining ends of said links substantially as described. i

2. A `sheet-metal core lfor building-walls having its longitudinal edges overlapping; links pivoted to said core on one side of the overlap; a controlling-rod alsol pivoted to said links 3 and guides for said coi'itrolling-rod mounted on said core on the other side of said overlap.

3. A sheet-metal core for building-walls having its longitudinal edges overlapping; links pivoted to said core on one side of the overlap; controlling-rod also pivoted to said links; guides for said controlling-rod mounted on said core on the other side of said overlap, saidl guides being extended across said overlap; and keepers for said. guide extensions which keepers are fastened to the core on the same side of the overlap with the link-pivots. l

In witness whereof I .have hereunto subscribed my name in the presence of two wit nesses.

WlLLIAM E. DE LHORBE. Witnesses: HOWARD M. Cox, HENRY KAHN. 

